Tag Archives: power adapter

I have an old Umax SOHO 1OHO8 ethernet switch that I would like to use in my LAN-network, but the power adapter has a very strange problem : one of the pins that go into the wall power outlet has come loose, and now ‘retracts’ whenever I plug the power outlet.

I already tried gluing the pin back into the power adapter with superglue, but I can’t fasten it, so it keeps coming loose. I also tried using an adapter plug, but I couldn’t find one that enabled me to keep the pin from retracting…

What can I do to fix this ?

Answer :

Just buy a new one.

You probably won’t be able to find the original one, but you will be able to find a new generic one with the correct specs.

In my office, I am using an external monitor as my main screen for my MacBook Pro. Today, the screen didn’t respond when I connected my MacBook however : the screen stays black and nothing appears on-screen. So I opened up my MacBook and used the built-in screen to figure out what’s wrong, but so far I haven’t found any indication in the Displays Preference Panel that my MacBook even detects the second screen…

What can I do ?

Answer :

In such situations you should always do this first :

Remedy #1 :

make sure your monitor is switched ON

then hit the SPACE-bar on your external keyboard several times (maybe once, usually about 5 to 10 times…)

the monitor should now appear and show the inlog panel to unlock your screensaver

then login

if this works, you’re good, if not, try Remedy #2

NOTE : if you have a Benq monitor (especially the BL2420TP), try this first :

reconnect your Mac to your monitor using a different type of cable then you normally would choose (e.g. if you normally use a DisplayPort/Thunderbolt-cable, use an HDMI or DVI cable now)

switch on your MacBook

switch on your monitor

if your monitor wakes from sleep now, open Apple –> System Preferences

in the System Preferences window, select “Displays”

in the Display Preferences window, see if there is a button marked “Gather Windows” bottom right

if there is a “Gather Windows” button, click on it

then you will see 2 Display Preference windows on your MacBook screen

now, remove the monitor-cable that you have just used to connect your MacBook to your monitor

then, reconnect your MacBook to your monitor using all cables you normally use to connect the two

if your monitor now wakes from sleep, you’re good

if it doesn’t, restart your monitor

it that doesn’t help, restart your Mac

normally your issue should be resolved by now…

if still the monitor stays showing a back screen, I’m sorry to inform you that your screen probably has a hardware problem… if so, get an authorized Mac-repair-centre to fix it, get the Apple Store support-crew to fix this…

I bought myself a very good-value-for-money IP-cam that is called the QD520, only to find out no power adapter was included in the packaging. What are the specs of the official power adapter and where can I get one ?